Error 'Will not send event port_delete_end for network xxx' when agents are alive

[Sergey Belous]

This happens when agents are alive, but none of them managing the network.

Log:
2015-11-24 12:58:48.973 25277 INFO neutron.callbacks.manager [req-6495acd9-ac68-42f4-917d-f3c9fdc6b430 ] Notify callbacks for port, before_delete
2015-11-24 12:58:48.973 25277 INFO neutron.callbacks.manager [req-6495acd9-ac68-42f4-917d-f3c9fdc6b430 ] Calling callback neutron.db.l3_db._prevent_l3_port_delete_callback
2015-11-24 12:58:49.069 25277 INFO neutron.callbacks.manager [req-6495acd9-ac68-42f4-917d-f3c9fdc6b430 ] Notify callbacks for port, after_delete
2015-11-24 12:58:49.070 25277 INFO neutron.callbacks.manager [req-6495acd9-ac68-42f4-917d-f3c9fdc6b430 ] Calling callback neutron.db.l3_db._notify_routers_callback
2015-11-24 12:58:49.070 25277 INFO neutron.callbacks.manager [req-6495acd9-ac68-42f4-917d-f3c9fdc6b430 ] Calling callback neutron.db.l3_dvrscheduler_db._notify_port_delete
2015-11-24 12:58:49.076 25277 WARNING neutron.plugins.ml2.drivers.l2pop.mech_driver [req-6495acd9-ac68-42f4-917d-f3c9fdc6b430 ] Unable to retrieve the agent ip, check the agent configuration.
2015-11-24 12:58:49.495 25277 ERROR neutron.api.rpc.agentnotifiers.dhcp_rpc_agent_api [req-6495acd9-ac68-42f4-917d-f3c9fdc6b430 ] Will not send event port_delete_end for network fa002ff9-0df9-4b5f-b8cf-89a933a2f710: no agent available. Payload: {'port_id': u'be3e3447-94a6-4bcc-914c-1c4a87b32b37'}

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/253032

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/liberty
Review: https://review.openstack.org/258894

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/253032
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=7d42ee769cdd4f4dc7b2ca1d85557bc471ce4b7e
Submitter: Jenkins
Branch: master

commit 7d42ee769cdd4f4dc7b2ca1d85557bc471ce4b7e
Author: Sergey Belous <email address hidden>
Date: Thu Dec 3 18:49:13 2015 +0300

    Add check that list of agents is not empty in _get_enabled_agents

    No reason to try get enabled_agents and send notification
    if there are no any agents associated with network.

    Closes-bug: #1522471
    Change-Id: I111967415ce600253fc679837d03c9cd75f19656

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/258894
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=53c46fe9652e149f0743f8e233a74770e3664602
Submitter: Jenkins
Branch: stable/liberty

commit 53c46fe9652e149f0743f8e233a74770e3664602
Author: Sergey Belous <email address hidden>
Date: Thu Dec 3 18:49:13 2015 +0300

    Add check that list of agents is not empty in _get_enabled_agents

    No reason to try get enabled_agents and send notification
    if there are no any agents associated with network.

    Closes-bug: #1522471
    Change-Id: I111967415ce600253fc679837d03c9cd75f19656
    (cherry picked from commit 7d42ee769cdd4f4dc7b2ca1d85557bc471ce4b7e)